add dependabot

[davidhewitt]

No description provided.

[codecov]

Codecov Report

Merging #58 (41a4451) into main (91ca29a) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #58   +/-   ##
=======================================
  Coverage   99.12%   99.12%           
=======================================
  Files           6        6           
  Lines         917      917           
=======================================
  Hits          909      909           
  Misses          8        8           

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